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LC74751 Datasheet

  • LC74751

  • On-Screen Display LSI

  • 15頁

  • SANYO

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Ordering number : EN*5396
CMOS LSI
LC74751
On-Screen Display LSI
Preliminary
Overview
The LC74751 is a CMOS LSI that supports on-screen
display of characters and patterns on a TV screen under
the control of a microcontroller. The LC74751 includes an
on-chip character ROM that provides 128 characters in a
12
脳
18 dot format. This IC supports display of up to 12
lines of 24 characters each for a maximum of 288
characters.
Package Dimensions
unit: mm
3059-DIP22S
[LC74751]
Features
鈥?Display format: 24 characters by 12 rows
鈥?Characters displayed: Up to 288 characters
鈥?Display control ROM (line ROM): ROM for 64 lines
(Control in line units: lines consisting of 24 characters)
鈥?Display RAM: 176 characters (Used for the specification
of user-defined characters.)
鈥?Character format: 12 (horizontal)
脳
18 (vertical) dots
鈥?Characters in font: 128
鈥?Character sizes: Four sizes each in the horizontal and
vertical directions
鈥?Initial display positions: 64 horizontal positions and 64
vertical positions
鈥?Blinking: Specifiable in character units
鈥?Blinking types:
鈥?Two periods supported: 1.0 second and 0.5 second
鈥?Three duty types supported: 25%, 50%, and 75%
鈥?Blanking: Over the whole font (12
脳
18 dots)
鈥?Background color
鈥?8 background colors (in internal synchronization
mode): 4fsc (NTSC/PAL/PAL-M/PAL-N)
鈥?4 background colors (in internal synchronization
mode): 2fsc (NTSC)
鈥?Single background color (blue) (in internal
synchronization mode): 2fsc (PAL/PAL-M/PAL-N)
鈥?External control input: Serial data input
鈥?Synchronizing signals: Supports switching between
internal and external synchronizing signals.
鈥?On-chip sync separator circuit
鈥?Video output: Composite video output in the NTSC,
PAL, PAL-M, or PAL-N format
鈥?Superimpose function: Superimposes the character
output on the composite video output.
SANYO: DIP22S
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
83096HA (OT) No. 5396-1/15

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